Hot compressive behaviors of Ti-6Al-2Zr-1Mo-1V alloy at 800 ℃, as well as the evolution of microstructure during deformation process, were investigated. The experimental results show that flow stress increases to a peak stress followed by a decease with increasing strain, and finally forms a stable stage. Dislocations are generated at the interface of α/β phase, and the phase interface and dislocation loops play an important role in impeding the movement of dislocation. As strain in-creasing, micro-deformation bands with high-density dislocation are formed, and dynamic recrystal-lizaton occurs finally. XRD Fourier analysis reveals that dislocation density increases followed by a decrease during compressive deformation, and falls into the range from 10~(10) to 10~(11)cm~(-2).
参考文献
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